No pcv valve, but catch can instead?
 

Theoretically if you plugged off the pcv valve inlet to the intake manifold. Plugged that off. But use the pcv valve outlet nipple (on the intake manifold side of the valve cover) to run to a catch can which then routes either to atmosphere, or back to the intake (post air filter, pre-IAT sensor), would that be a good system to run? I am wondering if that would be okay. Why run the risk of pcv fault under boost when you can just remove it instead and use a catch can to atmosphere?

as for the exhaust side valve cover outlet, that would be the same. Just 3/8" ID vacuum hose to catch can and or vent to atmosphere.

should there be a problem with that system?

I'm looking to run 200whp turbo stock internals 1.8l NA.

I'm sure this might be answered but it's definitely not simple to find with searching, due to the wide variety of differing pcv setups and off-topic rambles being discussed.

Thank you for your guy's / gal's HELP!!

Take care & have a lovely day

Thank you very much. That was exactly what i was hoping to learn. Didn't want to make anything to go wrong with something as little as that with how much time and work was just spent on the new setup. Appreciate you

I apologize for the delayed response. Forgive me but i read over that thread and i didn't really see an answer to my question.

let me reword it a little less complicated.

Intake manifold is plugged (Where the pcv valve hose used to hook up to).

Pcv valve is deleted/removed. But the outlet is routed to a catchcan which is then VTA.

The exhaust side outlet is VTA.

Can someone explain what the problem is with just removing the pcv valve it self and running that kind of setup?

i can run 2 separate unrestricted catch can on each sides, but I'm using vta as an example. I can also route the exhaust side catch can into the intake post filter, pre turbo.

From my understand of the thread, it's

Intake Manifold - Capped
On the valve cover, Intake AND Exhaust ports are both vented to the Catch Can

Yup. Thank you. I'm not really seeing where it explains why you cannot delete your pcv valve with a reason.

Ah my bad. Yes both are vented to a catch can. However, NOT the same catch can. AND PCV the piece it self, is deleted. Any issues or important problems with that setup?

Yes....read the thread.

Actually just read the linked post

Going by the older thread, a general consensus (except for Sav) seemed like running both sides to catch can which then vta.
https://www.miataturbo.net/engine-pe...-78293/page11/

Going by the newer thread, Sav points out why he sticks to the cap pcv/intake manifold and then exhaust side to catch can.
https://www.miataturbo.net/engine-pe...2/#post1460667

Going by the above, when/if I decide to run a catch can, I plan on capping IM and PCV, and tapping the exhaust side with a -10AN line and running that to a catch can which then vta.

I apologize if my first post was wrong as I didn't read the air-oil-separator-filling-up-too-fast thread.